Waterproof boot and shoe.



Wb'iiwww PATBNTED' JUNE 18, 1907.

H. F. KARTH.

WATERPROOF BOOT AND SHOE.

APPLIOATION FILED MAR. 22, mos.

' tion, soreness and the like.

HEINRICH r. KARTI-I, or HAMBURG, GERMANY.

WATERPROOF BOOT AND SHOE.

Specification of Letters Patent.

Patented June 18, 1907.

Application filed March 22, 1906- Serial No. 307,448.

To all whom, it may concern:

Be it known that I, HEINRIoII F. KAR'III, a citizen of Hamburg, and a resident of No. 242 Billhorner Rohrendamm, Hamburg, in the Empire of Germany, have invented new and useful Improvements in WVaterproof Boots and Shoes, of which the following is a specification.

The present invention relates to improvements in waterproof boots and shoes. Special objects of the invention are to render more efficient and serviceable boots and shoes of the kind referred to and to simplify and cheapen the construction.

WVith these ends in view the invention con sists in the novel combination, arrangement and adaptation of parts, all as more fully hereinafter described, shown in the accompanying drawings and then specifically set out in the appended claims.

In the drawings Figure 1 illustrates in side elevation a boot, partly broken away to show the waterproof layer according to this invention. Fig. 2 represents a cross section through the sole portion of the boot.

The arrangement of a waterproof layer embedded in the shoe between the outer leather and the lining so as to envelop the foot entirely entails the disadvantage that the natural efiiuvium and perspiration of the foot, as well as the circulation of air through the shoe is intercepted. In consequence the advantage of having a shoe impermeable to dampness is exchanged and more than bal anced by bodily inconvenience and harm. Very frequently the disadvantage mentioned leads to foot diseases, such as foul perspira- My invention aims at obviating these drawbacks in a simple and effective manner.

In carrying into practice the invention I insert a waterproof layer, which is permeable to air, such as rubber cambric, at the instep only 'i. 6. between the heel and the toes, ob-

servations and experiments having demonstrated the fact that it is at this portion of the shoe where the dampness nearly always penetrates.

The layer 0 embedded between the external leather and the internal lining thus extends from the heel (L to the toes or the toe cap b respectively. This layer may encircle the foot at the instep or it may consist of two sheets, as indicated in Fig. 2. It is held in place closely adhering to the leather by the lining or by the heel cap d at the rear end and the seams of the toe cap I) at the iront ends. here seams penetrate the layer the use of a rubber solution closes up the holes and prevents the penetration of dampness.

A thorough system of tests has proven the high efficiency of my improved waterproof boots and shoes.

It will be obvious that the waterproof layer may vary in size to suit different girths of the instep.

While I have shown the preferred form of the layer it is to be understood that I do not wish to limit myself to the precise form shown but reserve the right to all such modifications as fall within the scope of my claims.

WVhat I do claim as my invention, and desire to secure by Letters Patent, is:

The combination with a boot or shoe of a waterproof but air-permeable layer, said layer being inserted beneath the lining at the instep portion only 'i. 6. between the heel and toe portion, substantially as and for the purpose set forth.

In witness whereof I have hereunto signed my name this 7th day of March 1906, in the presence of two subscribing witnesses.

HEINRICH F. KARTI-I.

IVitnesses ERNEST H. L. MUMMENIIOFF, IDA CHRIST. I'IAFERMANN. 

